The repeating contractile unit of a skeletal muscle fiber is the
A) sarcolemma.
B) sarcomere.
C) sarcoplasmic reticulum.
D) myofibril.
E) myofilament.
Answer: B
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Identify the correct sequence for the steps of meiosis I
A) Telophase I - anaphase I - metaphase I - prophase I B) Prophase I - metaphase I - anaphase I - telophase I C) Interphase - mitosis - meiosis D) 46 chromosomes, 23 chromosomes, then 46 chromosomes
Aldosterone:
a. increases sodium reabsorption by the kidney b. increases water reabsorption c. increases the water volume in extracellular fluid d. all of the above
Free energy is the only type that can be used to perform cellular work.
Answer the following statement true (T) or false (F)
Which of the bones below does not belong to the appendicular skeleton?
A. Patella B. Clavicle C. Ethmoid D. Ulna E. Fibula